This is what Google has to say about "H1B minimum salary":
"The H 1B also requires that the H-1B employer pay the H-1B employee the prevailing wage or the actual wage, whichever is higher. The prevailing wage is the salary paid to workers in similar occupations in the geographic area of the intended employment. The actual wage is the wage that the employer pays employees in similar occupations at the location of the intended employment.. Since the procedures and record keeping required for the H-1B are complex, an attorney or other trained person will be necessary to complete the paperwork."
"The H 1B also requires that the H-1B employer pay the H-1B employee the prevailing wage or the actual wage, whichever is higher. The prevailing wage is the salary paid to workers in similar occupations in the geographic area of the intended employment. The actual wage is the wage that the employer pays employees in similar occupations at the location of the intended employment.. Since the procedures and record keeping required for the H-1B are complex, an attorney or other trained person will be necessary to complete the paperwork."
https://internationaloffice.berkeley.edu/h-1b_faqs